Chapter 4 of Charlotte’s Web introduces us to a new character named Wilbur, who is a young pig. Here are the main ideas from this chapter, explained in a way suitable for a nine-year-old pupil:

1. Wilbur’s new home: Wilbur is taken to his new home, a barn on the Zuckerman farm. He is excited to explore his surroundings and meet the other animals living there.

2. Meeting the other animals: Wilbur quickly makes friends with the other animals in the barn. He meets a wise old sheep named Samuel, a motherly goose named Gussy, and a sassy rat named Templeton.

3. Wilbur’s loneliness: Despite making new friends, Wilbur feels lonely and longs for companionship. He misses his siblings and wishes he had someone to play with.

4. Fern’s visits: Fern, the little girl who saved Wilbur’s life, often comes to visit him in the barn. She loves spending time with him and tells him stories. Wilbur cherishes these visits as they make him feel loved and special.

5. Wilbur’s desire to be important: Wilbur wants to be important and fears that he will be forgotten once he grows up. He confides in Charlotte, a spider who lives in the barn, about his worries.

6. Charlotte’s promise: Charlotte, being wise and understanding, promises to help Wilbur become important. She tells him that she has a plan to save his life and make him famous, but she keeps the details a secret for now.

7. Wilbur’s hope: With Charlotte’s promise, Wilbur feels hopeful and excited about the future. He believes that something extraordinary is about to happen, and he eagerly waits for Charlotte to reveal her plan.

In this chapter, we see Wilbur settling into his new home, making friends, and discovering his desire to be important. We also learn about the special bond between Wilbur and Fern, as well as the mysterious promise made by Charlotte.